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工程设计学报  2023, Vol. 30 Issue (1): 93-101    DOI: 10.3785/j.issn.1006-754X.2023.00.014
建模、仿真、分析与决策     
对转圆柱滚子轴承动态特性分析
张龙隆1(),肖正明1(),刘江1,刘卫标2
1.昆明理工大学 机电工程学院,云南 昆明 650500
2.云南昆钢重型装备制造集团有限公司,云南 昆明 650501
Dynamic characteristics analysis of counter-rotating cylindrical roller bearing
Long-long ZHANG1(),Zheng-ming XIAO1(),Jiang LIU1,Wei-biao LIU2
1.Faculty of Mechanical and Electrical Engineering, Kunming University of Science and Technology, Kunming 650500, China
2.Yunnan Kunming Iron & Steel Heavy Equipment Manufacturing Group Co. , Ltd. , Kunming 650501, China
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摘要:

针对内外圈对转圆柱滚子轴承内部复杂的运动特性及相互作用力,通过分析轴承径向游隙的影响因素以及考虑滚子与滚道的接触变形和热效应对油膜厚度的影响,利用拟静力学法建立了轴承的分析模型,并采用Newton-Raphson法进行求解;同时,利用该模型对滚子打滑率进行计算,以验证所采用分析方法的正确性和可靠性。然后,进一步探讨了不同工况下对转圆柱滚子轴承内部组件的转速变化规律与接触特性。结果表明:滚子的自转转速、滚子与滚道的接触载荷均随径向载荷的增大而增大;内、外圈转速变化会使受载区滚子与滚道的接触载荷以一定的规律重新分配,且转速对最小油膜厚度的影响较径向载荷更为明显。研究结果可为对转圆柱滚子轴承的结构优化和生热机理分析提供理论依据。

关键词: 对转圆柱滚子轴承动态特性拟静力学法接触载荷最小油膜厚度    
Abstract:

Aiming at the complex internal motion characteristics and interaction forces of cylindrical roller bearings with counter-rotating inner and outer rings, through analyzing the factors affecting the radial clearance of bearing and considering the contact deformation between rollers and raceway and the influence of thermal effect on oil film thickness, the analytical model of bearing was established by the quasi-static method and solved by the Newton-Raphson method; at the same time, the model was used to calculate the roller slip rate to verify the correctness and reliability of the analysis method. Then, the rotation speed variation and contact characteristics of internal components of counter-rotating cylindrical roller bearing under different working conditions were further discussed. The results showed that the rotation speed of roller and the contact load between rollers and raceway increased with the increase of radial load; the rotation speed change of inner and outer rings could make the contact load between rollers and raceway in the loaded area redistributed regularly, and the influence of rotation speed on the minimum oil film thickness was more obvious than that of radial load. The research results can provide a theoretical basis for structure design and heat generation mechanism analysis of counter-rotating cylindrical roller bearings.

Key words: counter-rotating cylindrical roller bearing    dynamic characteristics    quasi-static method    contact load    minimum oil film thickness
收稿日期: 2022-06-23 出版日期: 2023-03-06
CLC:  TH 133.3  
基金资助: 国家自然科学基金资助项目(51965025);云南省重点研发计划国际科技合作专项(202003AF140007);云南省基础研究计划面上项目(202201AT070103)
通讯作者: 肖正明     E-mail: 1476146576@qq.com;suzem@sina.com
作者简介: 张龙隆(1996—),男,贵州兴义人,硕士生,从事机械动力学研究,E-mail: 1476146576@qq.com,https://orcid.org/0000-0001-5608-3552
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引用本文:

张龙隆,肖正明,刘江,刘卫标. 对转圆柱滚子轴承动态特性分析[J]. 工程设计学报, 2023, 30(1): 93-101.

Long-long ZHANG,Zheng-ming XIAO,Jiang LIU,Wei-biao LIU. Dynamic characteristics analysis of counter-rotating cylindrical roller bearing[J]. Chinese Journal of Engineering Design, 2023, 30(1): 93-101.

链接本文:

https://www.zjujournals.com/gcsjxb/CN/10.3785/j.issn.1006-754X.2023.00.014        https://www.zjujournals.com/gcsjxb/CN/Y2023/V30/I1/93

图1  受载区滚子受力分析
图2  对转圆柱滚子轴承载荷分布
图3  滚子打滑率与径向载荷的关系
图4  对转圆柱滚子轴承安装示意
参数数值
轴承外径/mm110
轴承内径/mm70
节圆直径/mm90
初始径向游隙/mm0.04
滚子数26
滚子直径/mm10
泊松比0.3
弹性模量/Pa2.07×1011
表1  NU1014圆柱滚子轴承主要参数
图5  保持架转速与径向载荷的关系
图6  不同径向载荷下滚子的自转转速
图7  不同径向载荷下滚子与内圈滚道的接触载荷
转速/(r/min)1号滚子2号滚子3号滚子
0603.31506.02231.92
2 000511.49464.77330.88
3 000508.95463.59333.62
4 000507.49462. 91335.19
5 000506.51462.46336.23
表2  不同转速下滚子与内圈滚道的接触载荷 (N)
图8  不同径向载荷下滚子与滚道之间的油膜厚度分布
图9  不同转速下滚子与滚道之间的油膜厚度分布
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